Climbing ladder for vehicle

Abstract

The utility model discloses a vehicle top climbing ladder, which comprises an upper ladder, a lower ladder, a U-shaped upper mounting bracket and a U-shaped lower mounting bracket, the bottoms of side plates of the upper ladder are rotatably connected with the upper parts of side plates of the lower ladder, two side arms of the U-shaped upper mounting bracket are rotatably connected to the tops of the two side plates of the upper ladder, and lower ladder fixing lugs are arranged at the tops of the two side plates of the lower ladder. An overturning frame and two air springs symmetrically arranged on the outer side of the overturning frame are connected between the U-shaped lower mounting bracket and the lower ladder fixing lugs, the front ends of the two sides of the overturning frame are rotatably connected to the inner sides of the corresponding lower ladder fixing lugs, and the rear ends of the two sides of the overturning frame are rotatably connected to the inner sides of the two side arms of the U-shaped lower mounting bracket; the tail part of the air spring piston cylinder is rotatably connected to the outer side of the corresponding lower ladder fixing lug; and the head part of the air spring piston rod is rotatably connected to the outer side of the corresponding side arm of the U-shaped lower mounting bracket. The device has the advantages of good stability and safety, simple structure, convenience in use, easiness in mounting and manufacturing and the like.

Description

Technical Field

[0001] The utility model relates to a vehicle climbing ladder and belongs to the technical field of climbing ladders. Background Art

[0002] When large vehicles such as fire trucks, transport trucks, and trucks are in use, workers usually need to climb onto the roof to perform related operations. Since the roof of large vehicles is high, workers need to use a climbing ladder to climb onto the roof of the vehicle.

[0003] At present, the climbing ladder is usually foldable, including an upper ladder and a lower ladder that are hinged to each other, an upper mounting bracket is provided on the side of the upper ladder, and a lower mounting bracket is provided on the side of the lower ladder. When not in use, the lower ladder is flipped upward and folded at the upper ladder. When climbing to the top is required, the lower ladder is flipped downward and unfolded, so that the upper mounting bracket is fixed to the upper part of the vehicle compartment and the lower mounting bracket is fixed to the lower part of the vehicle compartment. Then the staff can climb the climbing ladder to the roof. In addition, a buckle-type locking mechanism is also provided on the climbing ladder. After the climbing ladder is folded, the lower ladder and the upper ladder are fixed together by the locking mechanism to prevent the lower ladder from falling from the upper ladder. When the climbing ladder needs to be unfolded for use, the locking mechanism is opened. These operations need to be completed manually by the staff, resulting in inconvenience in operation.

[0004] Chinese patent CN206360633U discloses an automatic retractable folding ladder, including a fixed ladder frame (equivalent to an upper ladder) and a movable ladder frame (equivalent to a lower ladder) hinged to each other, an upper mounting bracket and a lower mounting bracket, a rotating plate, and a power device. The upper end of the fixed ladder frame is hinged to the two ends of the upper mounting bracket, one side of the rotating plate is hinged to the upper end of the lower mounting bracket, and the other side is hinged to the movable ladder frame. The power device includes two gas springs, one end of the gas spring is hinged to the lower end of the lower mounting bracket, and one end of the piston rod is hinged to the side of the rotating plate close to the movable ladder frame. Although this patent can achieve automatic retraction of the folding ladder through the setting of the gas spring and the rotating plate, and can prevent the movable ladder frame from falling during the driving of the vehicle, in this patent, the bottom of the fixed ladder frame is hinged to the top of the movable ladder frame. When used in the unfolded state, the hinge between the fixed ladder frame and the movable ladder frame is unstable and easy to shake, and the safety is poor; in addition, in this patent, the two ends of the gas spring are respectively connected to the rotating plate and the lower mounting bracket. When the folding ladder is in the unfolded state, the gas spring does not provide sufficient support for the movable ladder frame, resulting in insufficient overall stability of the ladder frame and a safety risk; in addition, since the bottom of the fixed ladder frame is hinged to the top of the movable ladder frame, in the folded state, the gas spring is below the fixed ladder frame and the movable ladder frame, and the ladder frame as a whole has a greater gravity effect on the gas spring, resulting in a larger load-bearing gas spring, which is easily damaged and affects its service life. Utility Model Content

[0005] In view of the above problems existing in the prior art, the purpose of the utility model is to provide a stable and safe vehicle climbing ladder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The rear end of the gas spring piston cylinder is rotatably connected to the outer sides of the corresponding lower ladder fixing ears, and the head of the gas spring piston rod is rotatably connected to the outer sides of the corresponding side arms of the U-shaped lower mounting bracket.

[0008] In one implementation scheme, upper ladder fixing ears are vertically provided on the tops of the two upper ladder side plates, and the two side arms of the U-shaped upper mounting bracket can be rotatably connected to the inner sides of the corresponding upper ladder fixing ears.

[0009] In one implementation, vertical connection seats are fixedly provided at the bottom of the two upper ladder side plates, and transverse connection seats are fixedly provided at the outer upper parts of the two lower ladder side plates, and the vertical connection seats are rotatably connected to the transverse connection seats.

[0010] In one implementation scheme, a limit block is provided at the lower rear portion of the two upper ladder side plates.

[0011] In one embodiment, the flip frame includes left and right side plates and front and rear cross beams, front extension parts are provided at the front ends of the left and right side plates, and pin holes are provided on the front extension parts for rotationally connecting to the fixing ears of the lower ladder, and rear extension parts are provided at the rear ends of the left and right side plates, and pin holes are provided on the rear extension parts for rotationally connecting to the U-shaped lower mounting bracket.

[0012] In one embodiment, the pedal includes a pedal profile and an anti-slip rubber block arranged in the middle of the pedal profile.

[0013] In one implementation, a groove is provided in the middle of the pedal profile, and the anti-slip rubber block is embedded in the groove.

[0014] In a preferred embodiment, the top surface of the pedal profile and the top surface of the anti-skid rubber block are both provided with anti-skid grooves.

[0015] In one implementation scheme, LED lamp installation grooves are provided on the front and rear sides of the bottom of the pedal profile, and LED lamps are provided in the LED lamp installation grooves.

[0016] In a preferred embodiment, an LED light switch is provided on the lower inner side of the upper ladder side plate and / or the upper inner side of the lower ladder side plate, and the LED light switch is electrically connected to the LED lamp.

[0017] Compared with the prior art, the beneficial technical effects of the utility model are:

[0018] The vehicle climbing ladder provided by the utility model has a stable connection between the upper ladder and the lower ladder in the unfolded state, the gas spring has good supporting force for the lower ladder, the ladder frame has good overall stability, is not easy to shake, and has good safety; in the folded state, the gas spring has a small load-bearing capacity and is not easy to be damaged, and at the same time, the lower ladder is not easy to fall from the upper ladder under the limiting effect of the gas spring; and the vehicle climbing ladder described in the utility model also has the advantages of simple structure, easy use, easy installation and manufacture, etc., and has obvious practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a vehicle climbing ladder provided by an embodiment of the utility model in a folded state;

[0020] Figure 2 It is a structural schematic diagram of a vehicle-mounted climbing ladder provided by an embodiment of the utility model in an unfolded state;

[0021] Figure 3 It is a schematic diagram showing the connection structure between the U-shaped upper mounting bracket and the upper ladder in the embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram showing the connection structure between the upper ladder and the lower ladder in the embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram showing the connection structure between the U-shaped lower mounting bracket, the flip frame, the gas spring, the limit block and the lower ladder described in the embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the turning frame described in the embodiment of the utility model;

[0025] Figure 7 It is a schematic diagram of the structure of the limit block described in the embodiment of the utility model;

[0026] Figure 8 It is a schematic diagram showing the installation structure of the LED light switch described in the embodiment of the utility model;

[0027] Fig. 9 It is a schematic diagram showing the connection structure of the pedal and the LED lamp in the embodiment of the utility model;

[0028] Fig.10 yes Fig. 9 Partial cross-sectional view;

[0029] Fig.11 It is a schematic diagram of the end surface structure of the pedal profile described in the embodiment of the utility model;

[0030] The numbers in the figure are as follows:

[0031] 1. Go up the ladder; 1-1. Side plate of the upper ladder; 1-2. Step of the upper ladder; 1-21. Step profile; 1-211. Groove; 1-212. Anti-skid groove on the step profile 1-21; 1-213. LED lamp installation groove; 1-22. Anti-skid rubber block; 1-221. Anti-skid groove on the anti-skid rubber block 1-22; 2. Go down the ladder; 2-1. Side plate of the lower ladder; 2-2. Step of the lower ladder; 3. U-shaped upper mounting bracket; 3-1. Side arm of the U-shaped upper mounting bracket 3; 3-2. Back of the U-shaped upper mounting bracket 3; 4. U-shaped lower mounting bracket; 4-1. Side arm of the U-shaped lower mounting bracket 4; 4-2, the back of the U-shaped lower mounting bracket 4; 5, the lower ladder fixing ear; 6, the flip frame; 6-1, the side panel; 6-11, the front extension; 6-111, the pin hole on the front extension 6-11; 6-12, the rear extension; 6-121, the pin hole on the rear extension 6-12; 6-2, the crossbeam; 7, the gas spring; 7-1, the gas spring piston cylinder; 7-2, the gas spring piston rod; 8, the upper ladder fixing ear; 9, the vertical connecting seat; 10, the horizontal connecting seat; 11, the limit block; 11-1, the rectangular lower part; 11-2, the wedge-shaped upper part; 12, the LED light; 13, the LED light switch. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. In addition, it should be noted that the terms used in the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model. Unless otherwise defined, the technical terms or scientific terms used in the utility model should be the usual meanings understood by people with general skills in the field. The directions or positional relationships indicated by the terms "inside", "outside", "upper", "lower", "top", "bottom", "front", "back", "left", "right", "head", "tail", "vertical", "horizontal", etc. are all based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the utility model. In addition, terms such as "set", "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. It should also be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or there can be a central element.

[0033] Example

[0034] See also Figure 1 and Figure 2 As shown: the utility model provides a vehicle climbing ladder, comprising an upper ladder 1, a lower ladder 2, a U-shaped upper mounting bracket 3 and a U-shaped lower mounting bracket 4, the upper ladder 1 comprises two upper ladder side panels 1-1 and a plurality of upper ladder pedals 1-2 connected from top to bottom between the two upper ladder side panels 1-1, the lower ladder 2 comprises two lower ladder side panels 2-1 and a plurality of lower ladder pedals 2-2 connected from top to bottom between the two lower ladder side panels 2-1, the bottom of the two upper ladder side panels 1-1 and the upper part of the two lower ladder side panels 2-1 are rotatably connected, the two side arms 3-1 of the U-shaped upper mounting bracket 3 are rotatably connected to the top of the two upper ladder side panels 1-1, and the tops of the two lower ladder side panels 2-1 are respectively vertically connected. A lower ladder fixing ear 5 is directly provided, and a flip frame 6 and two gas springs 7 symmetrically arranged on the outside of the flip frame 6 are connected between the U-shaped lower mounting bracket 4 and the lower ladder fixing ear 5. The front ends of the flip frame 6 on both sides can be rotatably connected to the inner sides of the corresponding lower ladder fixing ears 5, and the rear ends of the flip frame 6 on both sides can be rotatably connected to the inner sides of the two side arms 4-1 of the U-shaped lower mounting bracket 4. The gas spring 7 includes a gas spring piston cylinder 7-1 and a gas spring piston rod 7-2. The tail of the gas spring piston cylinder 7-1 can be rotatably connected to the outside of the corresponding lower ladder fixing ear 5, and the head of the gas spring piston rod 7-2 can be rotatably connected to the outside of the corresponding side arm 4-1 of the U-shaped lower mounting bracket.

[0035] The method of using the vehicle climbing ladder described in the utility model is as follows:

[0036] The back 3-2 of the U-shaped upper mounting bracket 3 is fixed to the upper part of the vehicle compartment, and the back 4-2 of the U-shaped lower mounting bracket 4 is fixed to the lower part of the vehicle compartment;

[0037] Under normal conditions, the vehicle climbing ladder described in the utility model is as follows Figure 1 As shown, it is in a folded state and is suspended and fixed on the side of the vehicle compartment;

[0038] When the staff needs to climb to the top, by rotating the lower ladder 2 downward, since the bottom of the upper ladder side plate 1-1 is connected to the upper part of the lower ladder side plate 2-1, the downward rotation of the lower ladder 2 will drive the upper ladder 1 to rotate relative to the U-shaped upper mounting bracket 3. During the rotation of the lower ladder 2, the gas spring piston rod 7-2 of the gas spring 7 contracts, thereby causing the gas spring piston rod 7-2 and the turning frame 6 to rotate relative to the U-shaped lower mounting bracket 4, so that the gas spring piston cylinder 7-1 and the turning frame 6 rotate relative to the lower ladder 2 through the lower ladder fixing ear 5. When the gas spring piston rod 7-2 of the gas spring 7 contracts into place, the lower ladder 2 rotates into place, and the upper ladder 1 also rotates into place accordingly. At this time, the climbing ladder is like a ladder. Figure 2 As shown, in the unfolded state, the planes of the upper ladder 1 and the lower ladder 2 are parallel, and there is a certain angle between the plane of the entire ladder frame and the installation vertical plane (the angle is preferably 10-20°), so that the entire ladder frame is inclined, which is convenient for climbing. In this way, the staff can climb onto the roof by climbing the top ladder;

[0039] When the climbing operation is completed and the climbing ladder is no longer needed, the lower ladder 2 is rotated upward, and the gas spring piston rod 7-2 of the gas spring 7 is extended, the gas spring piston rod 7-2 and the turning frame 6 rotate relative to the U-shaped lower mounting bracket 4, and the gas spring piston cylinder 7-1 and the turning frame 6 rotate relative to the lower ladder 2 through the lower ladder fixing ear 5. When the gas spring piston rod 7-2 of the gas spring 7 is extended into place, the lower ladder 2 rotates into place, and the upper ladder 1 also rotates into place accordingly. At this time, the climbing ladder is Figure 1 As shown, in the folded state, since the lower ladder 2 has passed the dead point of the gas spring 7 during the rotation process, and the gas spring 7 and the turning frame 6 support and fix the lower ladder 2 from the side, the lower ladder 2 will not fall from the upper ladder 1 under the action of gravity.

[0040] The vehicle climbing ladder described in the present invention is used because the bottom of the upper ladder side plate 1-1 is connected to the upper part of the lower ladder side plate 2-1. Therefore, in the unfolded state, Figure 2As shown, there is a partial overlap between the upper ladder 1 and the lower ladder 2, so that the connection between the upper ladder 1 and the lower ladder 2 is more stable, the overall stability and safety of the ladder frame are good, and it is not easy to cause the danger of shaking when in use; in addition, since the upper ladder 1 and the lower ladder 2 are partially overlapped, during the folding and unfolding process, the rotation of the lower ladder 2 will drive the upper ladder 1 to rotate synchronously. After the lower ladder 2 is rotated into place, the upper ladder 1 also rotates into place, and the operation is very simple.

[0041] In addition, by Figure 2 It can be seen that, in the unfolded state, the gas spring 7 and the flip frame 6 are commonly connected between the lower ladder 2 and the U-shaped lower mounting bracket 4, thereby providing good support strength for the lower ladder 2, thereby further improving the overall stability of the ladder frame.

[0042] In addition, in the folded state, Figure 1 As shown, the gas spring 7, the turning frame 6, and the U-shaped lower mounting bracket 4 are integrally located on the lower side of the ladder frame as a whole, and the whole can be leaned against the car body. The center of gravity of the ladder frame as a whole does not fall directly on the gas spring 7. Therefore, the gravity effect of the ladder frame as a whole on the gas spring 7 is relatively small, and the gas spring 7 bears a small load and is not easily damaged. In addition, during the folding process, the lower ladder 2 has passed the dead point of the gas spring 7 during the rotation process. Therefore, in the folded state, the lower ladder 2 will not fall from the upper ladder 1 under the action of gravity.

[0043] In addition, compared with the rod-shaped ladder steps in patent CN206360633U, the up-ladder pedal 1-2 and the down-ladder pedal 2-2 are more stable and safer for workers to step on when going up and down the ladder.

[0044] In this embodiment, see Figure 3 As shown, upper ladder fixing ears 8 are vertically provided on the tops of the two upper ladder side plates 1-1, and the two side arms 3-1 of the U-shaped upper mounting bracket 3 can be rotatably connected to the inner sides of the corresponding upper ladder fixing ears 8. The upper ladder fixing ears 8 can be fixed to the tops of the upper ladder side plates 1-1 by welding.

[0045] In this embodiment, see Figure 4 As shown, vertical connection seats 9 are fixedly provided at the bottom of the two upper ladder side plates 1-1, and transverse connection seats 10 are fixedly provided at the outer upper parts of the two lower ladder side plates 2-1, respectively. The vertical connection seats 9 and the transverse connection seats 10 are rotatably connected. As a preferred solution, the vertical connection seats 9 are fixed to the bottom of the two upper ladder side plates 1-1 by welding, and the transverse connection seats 10 are fixed to the outer upper parts of the two lower ladder side plates 2-1 by welding.

[0046] In this embodiment, see Figure 5 As shown, a limit block 11 is provided at the rear lower part of the two upper ladder side plates 1-1 to prevent the lower ladder 2 from rotating excessively relative to the upper ladder 1. Specifically, the limit block 11 is as shown in FIG. Figure 7 As shown, it has a rectangular lower part 11-1 for installation and a wedge-shaped upper part 11-2 for limiting.

[0047] In this embodiment, please combine Figure 5 and Figure 6 As shown, the flip frame 6 includes left and right side plates 6-1 and front and rear cross beams 6-2. Front extension portions 6-1 are provided at the front ends of the left and right side plates 6-1. The front extension portions 6-11 are provided with pin holes 6-111 rotatably connected to the lower ladder fixing ears 5. Rear extension portions 6-12 are provided at the rear ends of the left and right side plates 6-1. The rear extension portions 6-12 are provided with pin holes 6-121 rotatably connected to the U-shaped lower mounting bracket 4.

[0048] In the present invention, the structure of the upper ladder pedal 1-2 is the same as that of the lower ladder pedal 2-2. In this embodiment, the upper ladder pedal 1-2 is used as an example for description. Figures 8 to 11 As shown, the stair step 1-2 includes a step profile 1-21 and an anti-skid rubber block 1-22 disposed in the middle of the step profile 1-21. The step profile 1-21 enables the step 1-2 to have sufficient support strength, and the anti-skid rubber block 1-22 enables the step 1-2 to have good anti-skid performance. Specifically, a groove 1-211 adapted to the anti-skid rubber block 1-22 is disposed in the middle of the top of the step profile 1-21, and the anti-skid rubber block 1-22 is embedded in the groove 1-211.

[0049] Also, see Fig.10 As shown, the top surface of the pedal profile 1-21 and the top surface of the anti-skid rubber block 1-22 are both provided with anti-skid grooves 1-212 and 1-221, which can further improve the overall anti-skid property of the pedal 1-2.

[0050] Please combine again Figures 9 to 11 As shown, LED lamp mounting grooves 1-213 are provided on the front and rear sides of the bottom of the pedal profile 1-21, and an LED lamp 12 is provided in the LED lamp mounting groove 1-213. When working at night, the LED lamp 12 can effectively ensure the safety of the operation. In addition, in the present embodiment, the LED lamp 12 is a hidden design. Compared with the traditional lighting lamp directly installed on the outside of the ladder, the LED lamp 12 of the present embodiment can meet the lighting needs of nighttime work without being dazzling, and can better ensure the safety of the operation. In addition, in the present embodiment, the LED lamp 12 can be powered directly by the vehicle power supply, that is, the LED lamp 12 is connected to a power plug, and when in use, the plug of the LED lamp 12 is directly plugged into the interface of the vehicle power supply.

[0051] In this embodiment, please refer to Figure 8As shown, an LED light switch 13 is provided on the lower inner side of the upper ladder side plate 1-1 and / or the upper inner side of the lower ladder side plate 2-1, and the LED light switch 13 is electrically connected to the LED light 12. When the upper ladder 1 and the lower ladder 2 are folded, the LED light switch 13 controls the LED light 12 to be extinguished, and when the upper ladder 1 and the lower ladder 2 are unfolded, the LED light switch 13 controls the LED light 12 to be lit. In this embodiment, an LED light switch 13 is provided on the lower inner side of the upper ladder side plate 1-1 and the upper inner side of the lower ladder side plate 2-1, so as to control the lighting of the LED lights 12 on the upper ladder 1 and the lower ladder 2, respectively. Specifically, the LED light switch 13 can be a commercially available proximity switch, which is electrically connected to a controller, and the controller is electrically connected to the LED light 12. For example, the LED light switch 13 on the upper ladder 1, when the upper ladder 1 and the lower ladder 2 are folded, the LED light switch 13 (proximity switch) detects the lower ladder 2, and the controller controls the LED light 12 to be turned off. When the upper ladder 1 and the lower ladder 2 are unfolded, the LED light switch 13 cannot detect the lower ladder 2, and the controller controls the LED light 12 to be turned on. Correspondingly, the principle of the LED light switch 13 on the lower ladder 2 is the same as above. In this way, the LED light switch 13 can automatically control the on and off of the LED light 12, which can save electricity.

[0052] In addition, it should be noted that, in the present invention, the tail of the gas spring piston cylinder 7-1 is rotatably connected to the outer side of the corresponding lower ladder fixing ear 5 through a universal ball head, and the head of the gas spring piston rod 7-2 is rotatably connected to the outer side of the corresponding side arm 4-1 of the U-shaped lower mounting bracket through a universal ball head; the rotatable connections described in other places are all connected by pin shafts.

[0053] Finally, it is necessary to point out that the above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be covered within the protection scope of the utility model.

Claims

1. A vehicle climbing ladder, comprising an upper ladder, a lower ladder, a U-shaped upper mounting bracket and a U-shaped lower mounting bracket, wherein the upper ladder and the lower ladder both comprise two side plates and a plurality of pedals connected from top to bottom between the two side plates; characterized in that: The bottom of the two upper ladder side plates are rotatably connected to the upper parts of the two lower ladder side plates, and the two side arms of the U-shaped upper mounting bracket are rotatably connected to the tops of the two upper ladder side plates, and lower ladder fixing ears are vertically provided on the tops of the two lower ladder side plates. A turning frame and two gas springs symmetrically arranged on the outside of the turning frame are connected between the U-shaped lower mounting bracket and the lower ladder fixing ears. The front ends of the two sides of the turning frame are rotatably connected to the inner sides of the corresponding lower ladder fixing ears, and the rear ends of the two sides of the turning frame are rotatably connected to the inner sides of the two side arms of the U-shaped lower mounting bracket. The gas spring includes a gas spring piston cylinder and a gas spring piston rod, the tail of the gas spring piston cylinder is rotatably connected to the outside of the corresponding lower ladder fixing ears, and the head of the gas spring piston rod is rotatably connected to the outside of the corresponding side arms of the U-shaped lower mounting bracket.

2. The vehicle climbing ladder according to claim 1, characterized in that: Upper ladder fixing ears are respectively vertically arranged on the tops of the two upper ladder side plates, and the two side arms of the U-shaped upper mounting bracket can be rotatably connected to the inner sides of the corresponding upper ladder fixing ears.

3. The vehicle climbing ladder according to claim 1, characterized in that: Vertical connecting seats are fixedly arranged at the bottom of the two upper ladder side plates, and transverse connecting seats are fixedly arranged at the outer upper parts of the two lower ladder side plates, and the vertical connecting seats are rotatably connected to the transverse connecting seats.

4. The vehicle climbing ladder according to claim 1, characterized in that: Limiting blocks are arranged at the lower rear parts of the two upper ladder side plates.

5. The vehicle climbing ladder according to claim 1, characterized in that: The flip frame includes left and right side plates and front and rear cross beams. Front extension parts are provided at the front ends of the left and right side plates, and pin holes are provided on the front extension parts for rotationally connecting to the fixing ears of the lower ladder. Rear extension parts are provided at the rear ends of the left and right side plates, and pin holes are provided on the rear extension parts for rotationally connecting to the U-shaped lower mounting bracket.

6. The vehicle climbing ladder according to claim 1, characterized in that: The pedal comprises a pedal profile and an anti-skid rubber block arranged in the middle of the pedal profile.

7. The vehicle climbing ladder according to claim 6, characterized in that: A groove is arranged in the middle of the pedal profile, and the anti-skid rubber block is embedded in the groove.

8. The vehicle climbing ladder according to claim 6, characterized in that: The top surface of the pedal profile and the top surface of the anti-skid rubber block are both provided with anti-skid grooves.

9. The vehicle climbing ladder according to claim 6, characterized in that: LED lamp installation grooves are arranged at the front and rear sides of the bottom of the pedal profile, and LED lamps are arranged in the LED lamp installation grooves.

10. The vehicle climbing ladder according to claim 9, characterized in that: An LED light switch is provided on the lower inner side of the upper ladder side plate and / or the upper inner side of the lower ladder side plate, and the LED light switch is electrically connected to the LED lamp.

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